This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A217875 #14 Apr 03 2023 10:36:13 %S A217875 22229,25391,69557,107563,111409,167953,200843,202309,208609,217271, %T A217875 221891,236609,238591,250091,250343,274609,290557,355591,373091, %U A217875 382391,404291,407119,415409,417419,439063,441229,447943,515191,542873,581891,582119,591691,614963 %N A217875 Primes which have the same (base 10) digital sum A007953 as the next smaller and next larger prime. %H A217875 M. F. Hasler, <a href="/A217875/b217875.txt">Table of n, a(n) for n = 1..733</a> (all terms below 10^7). %H A217875 C. Caldwell (Ed.), <a href="https://t5k.org/curios/page.php?short=22229">22229 (another Prime Pages' Curiosity)</a>. %o A217875 (PARI) {q=r=0; forprime(p=1,default(primelimit),(p-q)%18==0 & (q-r)%18==0 & A007953(p)==A007953(q) & A007953(p)==A007953(r) & print1(q","); r=q; q=p)} %Y A217875 A subsequence of A066540. %K A217875 nonn,base %O A217875 1,1 %A A217875 _M. F. Hasler_, Oct 13 2012